Layout of Daming Palace: The dressing room is located between the Zichen Hall and the Bath Hall, with a three-entry structure and a hidden wall
· Hidden pile system in dressing room: hidden grid on the wall, back of the bronze mirror, hollow space in the clothes stringer, under stepping bricks
· Tang Dynasty clothing codes: hidden pockets in palace sleeves, paper hidden in buns, and shoe soles
· Hour System: Twelve Hours and Changing System in the Tang Dynasty, accurately recording the emperor's dressing time
· Palace ban level: six bureaus and twenty-four divisions, the power boundaries of the Clothing Bureau and the Book Division
· Code word system: using spices, clothing materials, and jewelry as code names (sandalwood = amber sandalwood, musk = the emperor's attendant)
